Flue blower



' Dec. 2, 1924. v 1,517,348

A. S. DILLON FLUE BLOWER Filed April 1, ,l919

INVENTOR.'

JZZberZ 517222072,

ATTORNEY.

PATENT OFFICE.

ALBERT S. DILLON, OF KANSAS CITY, MISSOURI.

FLUE BLOWER.

Application filed April 1, 1919. Serial No. 286,809.

To all whom it may concern:

Be it known that I, ALBERT S. DILLON, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Flue Blowers, of which the following is a specification.

My invention relates to flue blowers and is an improvement over my U. S. Letters Patent No. 889,299. One object is to provide a simple, inexpensive and efficient device of this character adapted to be installed adjacent one end of a steam boiler and discharge steam into the flues of said boiler for the purpose of blowing out soot, ashes, etc, so that the boiler may economically perform its duty in the generation of steam.

A further object is to provide a blower which will not retard the flow of steam therethrough, to the end that the full force of said steam is utilized in performing the useful work of cleaning out the boiler flues.

Another object is to provide a flue blower which is adapted to withstand the high temperature to which it is subjected while in use.

Other objects and advantages will hereinafter appear, and in order that the invention may be fully understood, reference will now be made to the accompanying drawing, in which:

Fig. 1 is a broken vertical section of a furnace, the rear portion of a boiler ar-.

ranged in said furnace, and my flue blower arranged in its relative position to said boiler.

Fig. 2 is a front elevation of the flue blower.

Fig. 3 is an irregular vertical section on line III of Fig. 2.

Fig. 4 is a vertical section of a thimble employed in carrying out the invention.

Referring now in detail to the various parts, A designates a tubular boiler, and B designates a furnace having the usual combustion chamber C communicating with the rear portion of the boiler A.

1 designates my flue blower which consists of four flaring walls 3, an open front portion 5, a rear portion 6, and a hollow member, or tube 8 connected to the walls 3 by radial arms 10. The tube 8 and the arms 10 reinforce the walls 8 and coact therewith in and the angle between the walls which are widest apart is about 45 degrees.

In order to withstand the intense heat to 'which the flue blower is subjected to while in use, I prefer toconstruct the same of relatively hard cast iron, which being too hard to tap is provided with a thimble 12 of relatively soft metal and having internal screw threads 14, so that it may be screwed upon the forward end of a steam pipe 16 provided with a coupling 18 and a valve 20. The thimble 12 has a peripheral groove 22' and transverse peripheral grooves 2 1, so that when said nipple is placed in the flask in which the flue blower is cast, the molten metal will enter said grooves 22 and 24 and on cooling will securely hold the nipple in place, so that it cannot move backward or forward, or rotate in the rear portion of the flue blower when the steam pipe 16 is screwed into said thimble.

The tube 8 is a short rectangular tube arranged axially in line with the blast opening of the pipe 16 and thimble 12, and it is connected with the middle parts of the sides or walls 3 by arms 10, and at a predetermined distance from the thimble. The arms and the sides of the tube 8' are cast integral with the walls or sides and of relatively thin metal so as not to obstruct the blast materially. The arms 10 are connected to the middle parts of the sides of the tube between its angles so that they will not break by contraction when the casting cools in the mold.

As above described the front portion 5 of the flue blower is left open. Two ad'- vantages result. in this construction, first, there is nothing in the front portion of the flue blower to retard the passage of steam, and hence said steam discharges at full force into the boiler fines, and second, the life of the flue blower is greatly prolonged, as I have found by practice that a perforated front on a flue blower burns out more quickly than any other portion, owing to the fact that it is subjected to the full force of the superheated steam usually employed in cleaning the boiler flues.

In practice superheated steam is conducted from the boiler through the pipe 16 to the blower 1, after the valve 20 has been opened to allow the steam to flow therethrough. As the steam flows through the blower a. portion of it impinges against the tube 8 and the arms 10. A portion of the steam also passes through the tube 8 and enters the centrally-located fines of the boiler. One blower is efficient in cleaning out the fines of a small boiler, but where large boilers are in use two or more flue blowers are installed, so that all of the tines may be thoroughly cleaned.

lVhile I have shown the preferred form of the device, I reserve the right to makesuch changes in the construction combination and arrangement of parts as properly fall within the spirit and scope of the claim.

Having thus described my invention,

what I claim and desire to secure by Letters Patent, is:

A nozzle for a flue blower comprising a casting of relatively hard metal having four sides arranged at an angle to each other and forming an unobstructed oblong outlet for steam at the larger end of the casting, said casting having an inlet opening for steam at its other end, said casting having also a rectangular tube and radial arms which connect the sides of the said tube with the middle parts of the said sides of the casting.

In testimony whereof I afliX my signature, in the presence of two witnesses.

ALBERT S. DILLON. Witnesses F. G. FISCHER, L. J. Frsormn. 

